Millions Take This Popular Supplement – Scientists Discover a Concerning Link to Heart Failure (opens in new tab)

A common sleep supplement may carry unexpected risks when used long-term. Melatonin has long been marketed as a gentle, “natural” way to improve sleep. But new research is raising questions about what happens when people rely on it for years. A large international analysis of more than 130,000 adults with chronic insomnia found that those [...]